Energy-saving air conditioning system for high-speed rail station building
The high-speed rail station air conditioning system addresses high energy consumption by using sensor-controlled wind and return air pathways to optimize air regulation, achieving energy-efficient operation with reduced costs.
Patent Information
- Application Number
- CN202521124901.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-04
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2035-06-04
AI Technical Summary
The high-speed rail station air conditioning system has high energy consumption and high operating costs, and it is difficult to effectively reduce the existing technology.
By setting up fresh air inlets and return air outlets on the outside of the roof lighting glass of the high-speed rail station building, air conditioning is performed using natural conditions, and combining the automatic control of electric valves and sensors, intelligent switching of fresh air and return air is achieved, reducing energy consumption of the air conditioning system.
Use natural air conditioning during the transition season and winter to significantly reduce the energy consumption of air conditioning systems, reduce initial investment and reduce operating costs.
Smart Images
Figure CN223106205U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an air conditioning system for high-speed railway station buildings, which is mainly used for air conditioning of tall buildings and belongs to the technical field of air conditioning. Background Art
[0002] The waiting hall of a high-speed railway station building has a tall space, a large flow density of people, and a large cooling and heating load for air conditioning. Usually, the air conditioning system adopted in a high-speed railway station building includes a modular air handling unit, a fresh air duct, a return air duct, and a supply air duct. Outdoor fresh air is sent into the modular air handling unit through the fresh air duct, and after air purification, pressurization, and temperature adjustment, it is conveyed to the indoor air supply outlet through the supply air duct and enters the room to adjust the indoor temperature. Due to the large cooling and heating load for air conditioning in the high-speed railway station building, the energy consumption of the air conditioning system is relatively high, and the operating cost is high.
[0003] Therefore, reducing the energy consumption of air conditioners is of great significance for energy conservation and consumption reduction. Content of the Utility Model
[0004] Aiming at the above defects existing in the prior art, the utility model provides an air conditioning system for high-speed railway station buildings with small investment and energy conservation that can utilize natural conditions.
[0005] The utility model is realized by the following technical solutions: An energy-saving air conditioning system for high-speed railway station buildings includes a modular air handling unit, a fresh air duct, a supply air duct, and a first return air duct connected to the modular air handling unit. A number of indoor air supply outlets are arranged on the supply air duct, and a number of first return air inlets are arranged on the first return air duct. Its characteristics are: A first fresh air inlet and a second fresh air inlet for transitional seasons are arranged outside the roof daylighting glass of the high-speed railway station building. The fresh air duct includes a main fresh air duct and fresh air branches. The diameter of the main fresh air duct is larger than that of the fresh air branches. One end of the main fresh air duct is connected to the modular air handling unit, and the other end of the main fresh air duct is connected to the second fresh air inlet. One end of the fresh air branch is connected to the first fresh air inlet, and the other end of the fresh air branch is communicated with the main fresh air duct. A second return air duct is also arranged under the roof daylighting glass of the high-speed railway station building. One end of the second return air duct is communicated with the main fresh air duct, and the other end of the second return air duct is provided with a second return air inlet, and the second return air inlet is arranged close to the roof daylighting glass. Electric valves are arranged on the supply air duct, the first return air duct, the second return air duct, the fresh air branches, and the main fresh air duct between the second fresh air inlet and the fresh air branches. Each electric valve is electrically connected to a control device.
[0006] In the present utility model, the opening and closing of each electric valve can be controlled by a control device, thereby controlling the opening and closing of the fresh air, return air, and supply air ducts. When the electric valves on the main fresh air pipe between the second fresh air inlet and the fresh air branch pipe and the electric valve on the second return air pipe are both closed, and the electric valves on the supply air pipe, the first return air pipe, and the fresh air branch pipe are opened during the operation of the present utility model, the conventional air-conditioning cooling and heating mode of fresh air + lower return air can be operated. During the transitional season, when the temperature outside the station house is lower than the temperature inside the station house, the electric valves on the supply air pipe, the main fresh air pipe, and the fresh air branch pipe can be opened, and the electric valves on the first return air pipe and the second return air pipe can be closed to use fresh air for indoor cooling, which can reduce the energy consumption of the air-conditioning unit. During winter heating, since the hot air in the high-speed railway station house gathers upward, and the sunlight penetrates the roof lighting glass during the day to heat the gathered hot air, the air temperature in the upper part of the station house is higher than that in the lower part during the day. At this time, the electric valves on the supply air pipe and the second return air pipe are opened, and the electric valve on the fresh air pipe is closed. The air in the upper part of the station house enters the second return air pipe through the second return air inlet, and then enters the packaged air handling unit through the main fresh air pipe, which can reduce the energy consumption of the air-conditioning unit.
[0007] Further, a first temperature and humidity sensor is provided outside the roof lighting glass of the high-speed railway station house, a second temperature and humidity sensor is provided inside the high-speed railway station house, and a temperature sensor is provided below the roof lighting glass in the high-speed railway station house near the roof lighting glass. Each temperature and humidity sensor and temperature sensor are electrically connected to the control device. By setting the temperature and humidity sensors and temperature sensors, the control device can control the opening or closing of the corresponding electric valves according to the measured temperature and humidity data.
[0008] Further, a carbon dioxide sensor is also provided inside the high-speed railway station house, and the carbon dioxide sensor is electrically connected to the control device. The carbon dioxide concentration in the room can be detected by the carbon dioxide sensor so that the control device can control the opening of the corresponding electric valves.
[0009] Further, the opening of the electric valve on the fresh air branch pipe is controlled by the carbon dioxide concentration measured by the carbon dioxide sensor. When the carbon dioxide concentration measured by the carbon dioxide sensor is greater than the set value, the control device can control the opening of the electric valve on the fresh air branch pipe, thereby delivering fresh air to the packaged air handling unit and reducing the carbon dioxide concentration in the room.
[0010] Further, to ensure the effect of using fresh air to adjust the indoor air temperature during the transitional season, the diameter of the main fresh air pipe is set according to the maximum air supply volume of the packaged air handling unit.
[0011] The beneficial effects of the present utility model are as follows: (1) Through the special design of the fresh air duct, the present utility model can utilize fresh air to adjust the indoor air temperature in the transitional season. The purification and pressurization of fresh air utilize the original combined air handling unit. Compared with the conventional air conditioning system, the present utility model only increases a small amount of investment in fresh air ducts and does not require adding new equipment, with low initial investment. Fresh air is used as a cooling cold source for energy conservation, which can reduce the operating cost of the air conditioning system; (2) When heating in winter, due to the upward aggregation of hot air, the air aggregated in the upper part is heated by the light passing through the daylighting glass and has a temperature higher than that of the air in the lower personnel activity area. By setting a return air outlet in the upper part and using the main fresh air duct to transport the return air, the return air temperature is increased, which can significantly reduce the energy consumption of the air conditioning heat source and the operating cost of the air conditioning. Moreover, the additional return air ducts and return air outlets basically do not increase the investment, with low investment; (3) The present utility model can control the opening and closing of the corresponding electric valves according to the change of the outdoor temperature under different seasonal conditions through the control device, realizing automatic control. It can conveniently realize the operation modes of fresh air mode in the transitional season, upper return air mode in winter, and conventional return air + fresh air mode, with convenient control, which can greatly reduce the energy consumption of the air conditioning system and the operating cost of the air conditioning. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 is a schematic diagram of the principle of the present utility model (the thin dotted lines in the figure are data lines, and the thick dotted lines are return air ducts);
[0013] In the figure, 1 is a combined air handling unit, 2 is a temperature sensor, 3 is a first temperature and humidity sensor, 4 is a second temperature and humidity sensor, 5 is a control cabinet, 6 is a first return air outlet, 7 is an indoor air supply outlet, 8 is a second return air outlet, 9 is a first fresh air inlet, 10 is a second fresh air inlet, 11 is a carbon dioxide sensor, 12 is a first return air duct, 13 is a second return air duct, 14 is a main fresh air duct, 15 is a fresh air branch duct, 16 is an air supply duct, 17 is a rain shield;
[0014] V1 is an electric valve provided on the air supply duct, V2 is an electric valve provided on the first return air duct, V3 is an electric valve provided on the second return air duct, V4 is an electric valve provided on the main fresh air duct, and V5 is an electric valve provided on the fresh air branch duct. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0015] The present utility model will be further described below through non-limiting embodiments in combination with the drawings:
[0016] As shown in the attached drawings, an energy-saving air conditioning system for a high-speed railway station building includes a modular air handling unit 1, a fresh air duct, a supply air duct 16, and a first return air duct 12 connected to the modular air handling unit 1. Among them, the supply air duct 16 and the first return air duct 12 are both arranged in the low-altitude indoor area of the high-speed railway station building. A number of indoor supply air outlets 7 are provided on the supply air duct 16, and a number of first return air inlets 6 are provided on the first return air duct 12. A first fresh air inlet 9 and a second fresh air inlet 10 for transitional seasons are arranged outside the roof daylighting glass of the high-speed railway station building, and rain hoods 17 are provided outside both the first fresh air inlet 9 and the second fresh air inlet 10. The fresh air duct includes a main fresh air duct 14 and a branch fresh air duct 15. The diameter of the main fresh air duct 14 is larger than that of the branch fresh air duct 15. One end of the main fresh air duct 14 is connected to the modular air handling unit 1, and the other end of the main fresh air duct 14 is connected to the second fresh air inlet 10. One end of the branch fresh air duct 15 is connected to the first fresh air inlet 9, and the other end of the branch fresh air duct is communicated with the main fresh air duct. A second return air duct 13 is also arranged below the roof daylighting glass of the high-speed railway station building. One end of the second return air duct 13 is communicated with the main fresh air duct 14, and a second return air inlet 8 is arranged at the other end of the second return air duct. The second return air inlet 8 is arranged close to the roof daylighting glass. An electric valve V1 is provided on the supply air duct 16, an electric valve V2 is provided on the first return air duct 12, an electric valve V3 is provided on the second return air duct 13, an electric valve V4 is provided on the main fresh air duct 14 between the second fresh air inlet 10 and the branch fresh air duct 15, and an electric valve V5 is provided on the branch fresh air duct 15. The electric valves V1, V2, V3, V4, and V5 are all electrically connected to the control cabinet 5. The modular air handling unit 1 is a prior art and is provided with modules such as a filtration, purification, and dust removal system, a heat source system, and a cold source system.
[0017] To ensure the effect of using fresh air to adjust the indoor air temperature in the transitional season, preferably, the diameter of the main fresh air duct 14 is set according to the maximum air supply volume of the modular air handling unit 1, and the diameter of the branch fresh air duct 15 is set according to the fresh air volume required indoors under normal air conditioning conditions.
[0018] A first temperature and humidity sensor 3 is arranged outside the roof daylighting glass of the high-speed railway station building, a second temperature and humidity sensor 4 is arranged indoors in the high-speed railway station building, and a temperature sensor 2 is arranged below the roof daylighting glass close to it in the high-speed railway station building. Each temperature and humidity sensor and temperature sensor are all electrically connected to the control cabinet.
[0019] To control the indoor carbon dioxide concentration, a carbon dioxide sensor 11 is also arranged indoors in the high-speed railway station building, and the carbon dioxide sensor 11 is electrically connected to the control cabinet 5.
[0020] The working principle of the present utility model is as follows: The first temperature and humidity sensor 3 detects the outdoor temperature and humidity, and the measured temperature value is T1. The second temperature and humidity sensor 4 detects the indoor temperature and humidity, and the measured temperature value is T2. The control cabinet automatically controls the opening and closing of the corresponding electric valves according to the operating mode, and controls the start and stop of the modular air handling unit. In the transitional season, when T1 < T2, the electric valves V1, V4, and V5 are controlled to open, and the electric valves V2 and V3 are closed. The modular air handling unit 1 is started. Fresh air enters the fresh air pipe from the first fresh air inlet 9 and the second fresh air inlet 10, and is transported to the modular air handling unit 1. After being purified, dust-removed, and pressurized in the modular air handling unit 1, the fresh air is transported to the indoor air supply outlet 7 through the air supply pipe 16 and enters the room. Since the outdoor air temperature outside the high-speed railway station building is lower than the indoor temperature of the high-speed railway station building, the fresh air is used for indoor cooling, thus reducing the air-conditioning energy consumption. During winter heating, generally, the height of the air supply and return air of the central air-conditioning is about 4m, while the space inside the high-speed railway station building is relatively high. During heating, the hot air inside the room will gather upward, and the sunlight during the day will heat the gathered hot air through the roof lighting glass, so that the air temperature in the upper part of the room is higher than that in the lower part of the room during the day. The temperature sensor 2 installed below the roof lighting glass can monitor the air temperature in the upper part of the room, and the measured temperature value is T3. During winter heating, when T3 > T2, the electric valves V1 and V3 can be controlled to open, and the electric valves V2 and V4 are closed. (At this time, the opening of the electric valve V5 is controlled by the indoor carbon dioxide concentration measured by the carbon dioxide sensor 11. If the concentration is higher than the set value, it will automatically open. Generally, it does not need to be opened in winter in the northern region). The air return of the air conditioner in the upper part of the high-speed railway station building enters the second air return pipe 13 from the second air return outlet 8, and is transported to the modular air handling unit 1 through the main fresh air pipe 14. After being purified, dust-removed, and pressurized in the modular air handling unit 1, the air return is transported to the indoor air supply outlet 7. If T3 is higher than the set air supply temperature of the modular air handling unit 1 (generally about 30°C), the heat source system of the modular air handling unit 1 can not operate. When T3 is lower than the set air supply temperature of the modular air handling unit 1, the heat source system of the modular air handling unit 1 operates, and the air return is heated to the air supply temperature and then transported to the indoor air supply outlet. When the electric valves V3 and V4 are closed, and the electric valves V1, V2, and V5 are open, the conventional fresh air + lower air return air-conditioning cooling and heating mode can be operated.
[0021] The present utility model can utilize natural air in the transitional season and sunlight in winter to condition the air inside the high-speed railway station building, which can greatly reduce the energy consumption of the air-conditioning system in the high-speed railway station building and reduce the air-conditioning operation cost.
[0022] Other parts in this embodiment are all prior arts and will not be elaborated here.
Claims
1. An energy-saving air conditioning system for a high-speed railway station building, comprising a modular air handling unit, a fresh air duct, a supply air duct, and a first return air duct connected to the modular air handling unit. A plurality of indoor supply air outlets are provided on the supply air duct, and a plurality of first return air inlets are provided on the first return air duct. It is characterized in that: A first fresh air inlet and a second fresh air inlet for transitional seasons are arranged outside the roof daylighting glass of the high-speed railway station building. The fresh air duct includes a main fresh air duct and fresh air branch ducts. The diameter of the main fresh air duct is larger than that of the fresh air branch ducts. One end of the main fresh air duct is connected to the packaged air handling unit, and the other end of the main fresh air duct is connected to the second fresh air inlet. One end of the fresh air branch duct is connected to the first fresh air inlet, and the other end of the fresh air branch duct communicates with the main fresh air duct. A second return air duct is also arranged below the roof daylighting glass of the high-speed railway station building. One end of the second return air duct communicates with the main fresh air duct, and the other end of the second return air duct is provided with a second return air outlet. The second return air outlet is arranged close to the roof daylighting glass. Electric valves are arranged on the supply air duct, the first return air duct, the second return air duct, the fresh air branch ducts, and the main fresh air duct between the second fresh air inlet and the fresh air branch ducts. Each electric valve is electrically connected to the control device.
2. The energy-saving air conditioning system for high-speed railway station buildings according to claim 1, wherein: A first temperature and humidity sensor is arranged outside the roof daylighting glass of the high-speed railway station building, and a second temperature and humidity sensor is arranged inside the high-speed railway station building. A temperature sensor is arranged below the roof daylighting glass inside the high-speed railway station building close to it. Each temperature and humidity sensor and the temperature sensor are electrically connected to the control device.
3. The energy-saving air conditioning system for high-speed railway station buildings according to claim 1 or 2, characterized in that: A carbon dioxide sensor is also arranged inside the high-speed railway station building, and the carbon dioxide sensor is electrically connected to the control device.
4. The energy-saving air conditioning system for high-speed railway station buildings according to claim 3, characterized in that: The electric valve on the fresh air branch duct is controlled to open by the carbon dioxide concentration measured by the carbon dioxide sensor.
5. The energy-saving air conditioning system for high-speed railway station buildings according to claim 1, characterized in that: The diameter of the main fresh air duct is set according to the maximum air supply volume of the packaged air handling unit.